Crushing apparatus



Aug. 11, 1925.

O. E. JORGENSEN CRUSHING APPARATUS Filed July 5, 192g 6 I A Z 2 AWWI/113% IIIII/ O. t m w m d Patented Aug. 11, 1925.

UNITED STATES PATENT" OFFICE.-

OLAV ESKIL JORGENSEN, OF FOREST HILLS, NEW YORK, ASSIGNOR, BY MESNE AS-I SIGNMENTS, '1'0 ALLIS-CEALMERS MANUFACTURING COMPANY OF MILWAUKEE,WISCONSIN, A CORPORATION OF DELAWARE.

can-sums APPARATUS.

Application filed July 5,

SEN, a subject of the King'of Denmark, re-

siding at Forest Hills, county of Queens, and 5 State of New York, haveinventedcertain new and useful Improvements in Crushing Apparatus, fullydescribed and represented in the following specification and theaccompanying drawings, forming a part of the 1 same. I

This invention relates to improvements in crushing apparatus of thattype employing a swinging head and in which the crushing pressure isproduced or controlled by 1 centrifugal force. 5

It is one of the principal objects of the invention toprovide a crushingapparatus adapted to fine crushing and capable of a large capacity and ahigh ratio of reduction.

It is a further object of the invention to provide a crushing apparatusthat is more economical to manufacture than existing machines of a likecapacity.

With these general objects in view the invention consists in thecombinations, details of construction and arrangements of parts whichwill first be described in connection with the accompanying drawings andthen more particularly pointed out.

In the drawing:

Fig. 1 is a view in vertical section, with parts broken off, of acrushing apparatus 'constructed in accordance with the invention,showing the pendulum in operating position; I

Fig. 2 is a sectional view taken line 2-2 of Fig. 1;

Fig. 3 is a vertical sectional view, with arts broken off and parts'india am, of a modified construction, the pendu um being shown in aposition of rest; and 1 Fig. '4 is a detail view showing in crosssection the universal joint indicated diagrammatically in Fig. 3.

Referring'to the drawing, in the embodion the ment illustrated as anexample, a base 11 supports a casing or shell 12 having sectional linersor concaves 13. This shell, with its liners, forms the crushing chamber14'. Located in the crushing chamber and coacting with its concaves tocrush the matecharge chute 10.

' bearing from dust, there is provided, in the the diameter of a conicalrace 33 formed on 36' on a drive shaft 37 rotated b 1922. Serial No.572,788.

rial is a crusher head 15; This'.head, as here illustrated, comprises aconical headcenter 16 on which is mounted a conical mantle 17 a nut 18securing the mantle in place. With the construction described the mantlemay be made of a special and hard metal and may be readily renewed whendesired. Below the crushing chamber is a dis- There is provided auniversal suspension for the crusher head and this may, for example,include a ball and socket bearing. Although capable of variousconstructions, in that shown in Fig. -1, the head-center 16 has anupwardly extendin hollow shank 19 inwardl shouldered at t e top to reston the socketed block 20 of a ball and socket bearing. Block 20 bears ona ball element 21 which has a shank 22 hung by a nut 23 from a bracket24. This bracket is secured to a hub 25 connected by arms 26 with aspider 27 bolted to a flange28 on shell 12.

In order to protect the ball and socket present exemplification,.acylinder 29 of rubber, or the like, seated between a shouldered bushing30 and the bracket 24, the bushing being supported on a shoulder 31 onthe shank 19. This rubber cylinder also tends to keep the axis ofmovement of the crusher head on the axis of the apparatus. 7

The invention includes a weighted body, for example, a pendulum,rotatable on its own axis within the crusher head, and free to shift.its axis under centrifugal force, the

crusher head being actuated by the direct contact of the rotating bodyas the latter rolls on an interior race in the crusher head. Althoughcapable of various constructions,

in the embodiment illustrated in Fig. 1,

within the crusher head is a pendulum 32, conical in shape and ofa'diameter less than the interior of the crusher head center 16. Thereis provided ,a flexible driving connection for the pendulum. As hereshown as an example, the shaft of the-pendulum has a yoke 34 pivotallypinned to a coupling 35. This coupling is p1votally pinned to a yoke amotor indicated at 38. The construction described forms a universaljoint betweenmoto r shafk and pendulum whereby the latter may berotated, and at the same time have a universal movement.

When the pendulum is rotated at high speed thecentrifugal forcedeveloped causes it to swing out, so that the conical portion runs onrace 33, as shown in Figs. 1 and 2, whereby the crusher head is actuatedin the crushing chamber. This actuation of the crusher head causes thematerial, fed to the chamber 14 through he openings between arms 26, tobe crushed between the concaves 13 and the mantle 17 of the crushedhead.

The particular construction of pendulum and race here described,embodying conical contacting surfaces, reduces wear to a minimum.

To facilitate starting the crushing operation, there is provided meansfor preventing the pendulum from taking a vertical position. Althoughcapable of various constructions, in the embodiment shown in.

Fig. 1 the crusher head-center has a bottom cover 40 on the inside ofwhich is centrally located an abutment 41. On the bottom of the pendulumis a knob or projection 42 arranged to engage abutment 41, whereby thependulum is held out of a vertical position even when in a state ofrest.

In Fig. 3 is illustrated a modified construction. In theexemplificatio-n shown, seating in and threaded into hub 25 is asocketed block 45 which receives a ball element 46 for suspending thecrusher head 47. This ball element has a recess 48 in which is hung theshank 49 of the crusher head by means of a nut 50 threaded onto theshank. To protect the ball and socket bearing from dust, embracing theshank 49 is a stuffing box 51 secured to block 45 and having a packingring 52. A gland 53 serves to press the packing against the shank.Clamped by a ring 54 to the hub 25 is a flexible shield 55, its otheredge being clamped between stuffing box 51 and gland 53.

Rota table within the crusher head is a pendulum 56 having a sphericalportion 57 for-running on a cylindrical race 58 formed on the inside ofa crusher head center 59. The shaft 60 of the penduluniis mounted in ablock 61 and is connected by a universal joint 63 with a drive shaft 64driven by a motor indicated at 65. The block 61 carries a race 66 andthe }ball element'46 carries an arcuate race 67 Between these races areball bearings 68.

When shaft 64 is rotated it will rotate the pendulum on its own axis,the pendulum havlng a universal freedom of movement from approximatelythe point indicated by the dot 1, and permitted by a small amount oflost motion due to the recess 69 in the universal joint. By thecentrifugal force set up, the pendulum swings out so that its sphericalsurface 57 runs on race 58, thereby causing vibration of the crusherhead.

The operation of the apparatus wlll be clear from the above withoutfurther description.

What is claimed is:

1. In a crushing apparatus, a crusher casing forming a crushing chamber,a crusher head having a universal suspension and pro vided with aninterior race, a pendulum within the crusher head of less diameter thanthat of the race and having a portion adapted to run on said race, aflexible driving connection for rotating said pendulum on its own axis,whereby the pendulum is caused to run on said race, thereby to'actuatethe crusher head, a bottom cover on the crusher head, a central abutmenton the in terior of said cover, and a projection on the pendulum forengaging with said abutment to hold the pendulum out of a verticalposition.

2. In a crushing apparatus, a crusher casing forming a crushing chamber,a crusher head provided with an interior race and including a hollowshank, a support, a ball and socket suspension device for the crusherhead of which one element is carried by said support and the otherelement receives the thrust of the crusher head shank, a yieldable,resilient sleeve embracing the shank adjacent the ball and socketsuspension for excluding dust from the ball and socket and for holdingthe axis of movement of the crusher head on the axis of the 100apparatus, a pendulum within the crusher head having a portion "adaptedto run on said race, and a flexible driving connection for rotating saidpendulum on its own axis. 3. In combmat on, a; casing forming a crushingchamber, a crusher head gyratable driving connection for rotating saidpendulum on its own axis whereby said pendulum is caused to run uponsaid race to gyrate said head, an abutment disposed centrally of saidhead, and a projection on said pendulum engageable with said abutment tohold said pendulum out of central position with respect to said head.

4. In combination, a casing forming a crushing chamber, a head gyratablewithin said chamber and having a bore, a pendulum adapted to roll withinthe bore of said head, means for rotating said pendulum about. its ownaxis to cause the same to roll upon said bore and to gyrate said head,an abutment secured to and disposed centrally 5. In combination, acasing forming a crushing; chamber, a universally suspended crusher headgyratable within said chamber and having a central bore, a pendulumdisposed within said head, a flexible driving connection for rotatingsaid pendulum upon its own axis to cause the same to roll upon said boreto gyrate said head, an abutment secured to said head and, extendingupwardly toward said pendulum, and a projection at the lower extremityof said pendulum engageable with said abutment to hold said pendulum outof alinement with the axis of said head.

In testimony whereof, I have hereunto set my hand t OLAV ESKIL JORGENSEN.

